Before taking mepenzolate, tell your doctor or pharmacist if you are allergic to it; or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.
Before using this medication, tell your doctor or pharmacist your medical history, especially of: glaucoma, myasthenia gravis, movement/blockage disorders of the stomach/bowels (e.g., paralytic ileus, pyloroduodenal stenosis, achalasia, intestinal atony), difficulty urinating (e.g., prostatic hypertrophy), liver disease, kidney disease, heart/blood vessel disease (e.g., congestive heart failure, coronary artery disease, tachycardia), high blood pressure, overactive thyroid (hyperthyroidism), esophagus problems (e.g., GERD), nerve disorders (e.g., autonomic neuropathy), diarrhea, breathing problems (e.g., asthma), certain bowel diseases (toxic megacolon, ulcerative colitis).
Before having surgery, tell your doctor or dentist that you are using this medication.
This drug may make you dizzy or drowsy or cause blurred vision. Do not drive, use machinery, or do any activity that requires alertness or clear vision until you are sure you can perform such activities safely. Limit alcoholic beverages.
This medication can decrease sweating. To prevent heatstroke, avoid becoming overheated in hot weather, in saunas, and during exercise/other strenuous activities.
Caution is advised when using this drug in the elderly because they may be more sensitive to the side effects.
During pregnancy, this medication should be used only when clearly needed. Discuss the risks and benefits with your doctor.
It is not known whether this drug passes into breast milk. Consult your doctor before breast-feeding.
Interactions:
Drug interactions may change how your medications work or increase your risk for serious side effects. This document does not contain all possible drug interactions. Keep a list of all the products you use (including prescription/nonprescription drugs and herbal products) and share it with your doctor and pharmacist. Do not start, stop, or change the dosage of any medicines without your doctor’s approval.
Some products that may interact with this drug include: antihistamines (e.g., diphenhydramine, meclizine), antispasmodics (e.g., dicyclomine), belladonna alkaloids (e.g., scopolamine, atropine), certain antiarrhythmic drugs (e.g., quinidine), certain drugs for Parkinson’s disease (e.g., amantadine, benztropine, trihexyphenidyl), corticosteroids (e.g., prednisone), digoxin (slow-dissolving type), drugs for glaucoma (e.g., timolol), drugs which depend on stomach acidity (e.g., ketoconazole), MAO inhibitors (isocarboxazid, linezolid, methylene blue, moclobemide, phenelzine, procarbazine, rasagiline, selegiline, tranylcypromine), nitrates (e.g., isosorbide dinitrate), phenothiazines (e.g., promethazine, chlorpromazine), potassium tablets/capsules, pramlintide, tricyclic antidepressants (e.g., amitriptyline).
Tell your doctor or pharmacist if you also take drugs that cause drowsiness such as: anti-seizure drugs (e.g., carbamazepine), medicine for sleep or anxiety (e.g., alprazolam, diazepam, zolpidem), muscle relaxants, narcotic pain relievers (e.g., codeine), psychiatric medicines (e.g., chlorpromazine, risperidone, trazodone).
Check the labels on all your medicines (e.g., cough-and-cold products) because they may contain drowsiness-causing ingredients. Ask your pharmacist about using those products safely.
